This is a note to let you know that I've just added the patch titled staging: r8188eu: fix endless loop in recv_func to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: staging-r8188eu-fix-endless-loop-in-recv_func.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 00bcbebaceccde077b6cd8902a8165c2c906cc3d Author: Martin Kaiser <martin@xxxxxxxxx> Date: Sat Feb 26 19:14:53 2022 +0100 staging: r8188eu: fix endless loop in recv_func [ Upstream commit 1327fcf175fa63d3b7a058b8148ed7714acdc035 ] Fix an endless loop in recv_func. If pending_frame is not NULL, we're stuck in the while loop forever. We have to call rtw_alloc_recvframe each time we loop. Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver") Reported-by: Pavel Skripkin <paskripkin@xxxxxxxxx> Signed-off-by: Martin Kaiser <martin@xxxxxxxxx> Link: https://lore.kernel.org/r/20220226181457.1138035-4-martin@xxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/staging/r8188eu/core/rtw_recv.c b/drivers/staging/r8188eu/core/rtw_recv.c index e082edfbaad8..30ca9f1e0363 100644 --- a/drivers/staging/r8188eu/core/rtw_recv.c +++ b/drivers/staging/r8188eu/core/rtw_recv.c @@ -1942,8 +1942,7 @@ static int recv_func(struct adapter *padapter, struct recv_frame *rframe) struct recv_frame *pending_frame; int cnt = 0; - pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue); - while (pending_frame) { + while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) { cnt++; recv_func_posthandle(padapter, pending_frame); }